cinelli

Single-speed bikes have recently enjoyed a comeback in popularity due to their straightforward aesthetics, ease of use and relative lack of maintenance. Although not ideal for hilly areas, single speeds are excellent for urban riders because of their simplicity: they have no derailleur, no gears, and with fixed-gear bikes, no freewheel mechanism (the thing device allows riders to coast, leaving them to use their legs to slow down in tandem with a front brake -- some daring types run no brakes at all, using only their leg power to stop the bike).
With the warm weather upon us and more people than ever hitting the streets for their commute to work -- or the bar -- it's about time you got in on the action. Here are our 10 favorites. We've left no gear unturned, including everything from the most hardcore, feature-laden commuter to the most bare-bones fixed-gear track bike.